The time parameters most frequently used in hydrology are the time of concentration, lag time, time base, time to equilibrium, time to peak, time of travel, and residence time. Especially the time of concentration constitute an important part of operating rainfall-runoff modeling and determining critical rainfall intensity. In the result of simulation, we discovered that SCS formula has the highest value with length, Kerby with height and SCS with slope respectively, while only Kraven formula has the lowest value in them. With concerning to relative sensitivity, the time of concentration was marked the constant effect according to increase of length and slope level, and the length has much more effect than the slope relatively in parameters.